Commit r12-432, rewriting the dg-stuff, reverted the
adjustment for mmix-knuth-mmixware that I added in r11-2335.
(See those commits for context.)
Hopefully this variant will age better, just skipping it
with a trivial extra line less prone to pile-on. (Not much
is won by covering this generic case for MMIX too; might as
well skip it.)
Beware that the dg-skip-if text can't say
"temporary variables are not x and y but x::3 and y::4"
because that leads to (on one line):
ERROR: gcc.dg/tree-ssa/ssa-dse-26.c: can't set "{temporary
variables are not x and y but x::3 and y::4} {
mmix-knuth-mmixware }": parent namespace doesn't exist for
" dg-skip-if 4 "temporary variables are not x and y but
x::3 and y::4" { mmix-knuth-mmixware } "
gcc/testsuite:
* gcc.dg/tree-ssa/ssa-dse-26.c: Skip on mmix-knuth-mmixware.
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-dse1-details -fno-short-enums -fno-tree-fre" } */
/* { dg-skip-if "we want a BIT_FIELD_REF from fold_truth_andor" { ! lp64 } } */
+/* { dg-skip-if "temporary variable names are not x and y" { mmix-knuth-mmixware } } */
enum constraint_expr_type
{